class PeriodicScheduler(object):
    def __init__(self):
        self.scheduler = sched.scheduler(time.time, time.sleep)

    def setup(self, interval, action, actionargs=()):
        action(*actionargs)
        self.event = self.scheduler.enter(interval, 1, self.setup, (interval, action, actionargs))

    def run(self):
        self.scheduler.run()

    def stop(self):
        self._running = False
        if self.scheduler and self.event:
            self.scheduler.cancel(self.event)


# This is the event to execute every time
def periodic_event():
    print("hello")

# Start the scheduler
INTERVAL = 1
periodic_scheduler = PeriodicScheduler()
periodic_scheduler.setup(INTERVAL, periodic_event)  # it executes the event just once
periodic_scheduler.run()  # it starts the scheduler

import time

while #condition:
    # code execution
    # condition change
    time.sleep(1)

for i in range(counter):
    if condition:
        #execute the code
         time.sleep(1)
    else:
        break